Freezing winter is harmful ________ orange trees.
| A．for |
| B．to |
| C．of |
| D．at |
Remember to do this in time of H1N1 --- constantly the windows to let fresh air enter and move around inside, and avoiding the access to the crowds, a necessity everyday.
| A．open | B．we open | C．opening; | D．to open |
.If the studentspass a round of interviews by Peking University, they will have an extra 30 points to their national college entrance exam scores.
| A．recommended; added | B．recommended; adding |
| C．will be recommended ; added | D．to be recommended; to be added |
--- Are your family ready for rafting?
---Yes, I really want my children to experience thatthey are young
| A．\ | B．while | C．unless | D．if |
---Imaginationimportant in science, and it helps us dream up our future.
---You are definitely right. If only something allow me to see insects and spiders magnified without getting close to them.
| A．was; would | B．is; will | C．will be; can | D．is ;could |
Upon reading the notice all the staff of the company stood there, lookingat each other.
| A．no speaking | B．speechlessly | C．speechless; | D．did not speaking |